TY - JOUR
T1 - Quantification of respiratory sinus arrhythmia using Hilbert-Huang transform
AU - Kuo, Terry B J
AU - Yang, Cheryl C H
AU - Huang, Norden E.
N1 - Funding Information:
We thank Ms. Wen-Yi Wu for her excellent assistant in preparing this manuscript. This study was supported by a grant (YM-96A-D-P206) from the Ministry of Education, Aim for the Top University Plan and a grant (NSC-95-2314-B-010-087) from the National Science Council (Taiwan). N.E.H. is supported in part by a Chair at NCU endowed by Taiwan Semiconductor Manufacturing Company, Ltd., and a grant, NSC 95-2119-M-008-031-MY3, from the National Research Council, Taiwan, ROC.
PY - 2009/4
Y1 - 2009/4
N2 - To investigate whether the first intrinsic mode function, obtained from Hilbert-Huang transform (HHT), of heart rate variability is respiratory related. Electrocardiogram and chest circumference signals were recorded from 10 healthy subjects at supine rest. The HHT was applied to both R-R interval and chest circumference signals to figure out their first intrinsic mode functions (C1RR and C1RESP, respectively) from which the instantaneous amplitude, phase, and frequency were calculated. Although the instantaneous amplitudes and frequencies of C1RR and C1 RESP were variable, linear regression analysis indicated a phase lock between C1RR and C1RESP. Intake of 500 ml water significantly elevated the amplitude ratio of C1RR to C1 RESP; however, the phase difference of C1RR to C1 RESP was still unchanged. The data indicate that the first intrinsic mode function of heart rate variability is respiratory related and may be equivalent to respiratory sinus arrhythmia. As compared to fast Fourier transform, HHT of respiratory sinus arrhythmia provides a comparative spatial measurement with a much higher temporal resolution.
AB - To investigate whether the first intrinsic mode function, obtained from Hilbert-Huang transform (HHT), of heart rate variability is respiratory related. Electrocardiogram and chest circumference signals were recorded from 10 healthy subjects at supine rest. The HHT was applied to both R-R interval and chest circumference signals to figure out their first intrinsic mode functions (C1RR and C1RESP, respectively) from which the instantaneous amplitude, phase, and frequency were calculated. Although the instantaneous amplitudes and frequencies of C1RR and C1 RESP were variable, linear regression analysis indicated a phase lock between C1RR and C1RESP. Intake of 500 ml water significantly elevated the amplitude ratio of C1RR to C1 RESP; however, the phase difference of C1RR to C1 RESP was still unchanged. The data indicate that the first intrinsic mode function of heart rate variability is respiratory related and may be equivalent to respiratory sinus arrhythmia. As compared to fast Fourier transform, HHT of respiratory sinus arrhythmia provides a comparative spatial measurement with a much higher temporal resolution.
KW - autonomic nervous system
KW - electroencephalogram
KW - Heart rate variability
KW - respiration
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U2 - 10.1142/S1793536909000114
DO - 10.1142/S1793536909000114
M3 - Article
AN - SCOPUS:80052088164
SN - 1793-5369
VL - 1
SP - 295
EP - 307
JO - Advances in Adaptive Data Analysis
JF - Advances in Adaptive Data Analysis
IS - 2
ER -